/* reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  html, body {
    height: 100%;
  }
  .canvaswrap{
    position: relative;
    height: 700px;
    position: fixed;
    z-index: -10;
  }
  
  /* content */
  #canvas {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    /* https://s3.bmp.ovh/imgs/2021/11/0f998b5710bd3af4.jpg */
    /* background: url("https://s3.bmp.ovh/imgs/2021/11/bcbd1b15bf4386ce.jpg") no-repeat; */
    /* https://s3.bmp.ovh/imgs/2021/11/bcbd1b15bf4386ce.jpg */
    /* background-size:cover; */
    /* background-position: 0 -300px; */
  }